Double superphosphate

Double superphosphate (Ca(H2PO4)2-H2O) in contrast to simple superphosphate has a high content of assimilable phosphorus in terms of P2O5-42-49% and doesn’t contain gypsum. Phosphorus i presented in this fertilizer in the form of water-soluble monocalcium phosphate Ca(H2PO4)2-H2O and a small amount of free phosphoric acid (2.5-5.0%).

In the manufacturing process of double superphosphate apatite (or phosphorite) is treated with sulfuric acid. It’s taken more than in the production of simple superphosphate, in order to obtain not a monocalcium phosphate, but phosphoric acid, which is used for new portion of the raw material treatment. And as a result double superphosphate is obtained.

Double superphosphate has several effects on plants simultaneously: it increases the yield and metabolism, significantly accelerates the development of crops and their flowering, enhances the growth of the root system, and improves the quality of the future crop.

This fertilizer is also used to prevent diseases of plants during growth. Double superphosphate has a high content of assimilable phosphorus and doesn’t contain gypsum.